Function ispow2

Source/radiation/HypreABec.cpp:19–22

using namespace amrex;

static int ispow2(int i)
{
  return (i == 1) ? 1 : (((i <= 0) || (i & 1)) ? 0 : ispow2(i / 2));
}

Real HypreABec::flux_factor = 1.0;